Statutes, codes, and regulations
Washington Administrative Code
Title 51 - Enterprise Services, Department of (Building Code Council)
Chapter 51-52 - State Building Code adoption and amendment of the 2021 edition of the International Mechanical Code
Section 51-52-1106 - Section 1106-Machinery room, special requirements

Wash. Admin. Code § 51-52-1106

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Current through Register Vol. 24-23, December 1, 2024
Section 51-52-1106 - Section 1106-Machinery room, special requirements
1106.4.2Emergency ventilation system. An emergency ventilation system shall be provided at the minimum exhaust rate specified in ASHRAE 15 or Table 1106.4.2. Shutdown of the emergency ventilation system shall be by manual means.

Table 1106.4.2

MINIMUM EXHAUST RATES

Refrigerant

Q(m/sec)

Q(cfm)

R32

15.4

32,600

R143A

13.6

28,700

R444A

6.46

13,700

R444B

10.6

22,400

R445A

7.83

16,600

R446A

23.9

50,700

R447A

23.8

50,400

R451A

7.04

15,000

R451B

7.05

15,000

R1234yf

7.80

16,600

R1234ze(E)

5.92

12,600

Wash. Admin. Code § 51-52-1106

Adopted by WSR 20-03-041, Filed 1/8/2020, effective 7/1/2020
Amended by WSR 23-23-105, Filed 11/15/2023, effective 3/16/2024